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M-111 line out

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  • M-111 line out

    I found this diagram for wiring a line out to a Hammond spinet organ.
    http://www.dairiki.org/HammondWiki/LineOutFromASpinet
    I'm not great at reading circuit diagrams, so I'll tell you what I'm trying to do and hopefully someone who knows more about electronics than I do will be able to tell me if I need to modify the circuit, and if so how to modify the circuit.
    I have used guitar amps that switch off the internal speakers when you plug a cable into the extension speaker jack, and I would like to have my line out work the same way. I know that I need a load on the amp to replace the speaker resistance, so ideally I want a circuit that takes the "dummy load" out of the signal path when there isn't a cable plugged into the line out and puts it in while muting the internal speakers when there is a cable plugged in. Would the circuit above do that or would it have to be modified?

  • #2
    I posted a similar question on a forum. A Leslie Main/Ensemble/Echo switch will allow you to switch between the output, internal speaker and both.
    I just installed the trek II line out on my M-3 and actually enjoyed having the extra umph from the built in speaker at the gig I played with it friday. It kind of acted as a monitor for me because my rotary speaker was across the stage behind the guitarist. Not an issue for everyone but I enjoyed it plus those switches aren't cheap. I like your idea with it only being active when the cable is plugged in. I would like to see what answers you get.

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    • #3
      May use this original below with some imagination or as it is. It did the job for me on few spinets.


      Or this one
      Last edited by Guest; 02-19-2013, 11:47 PM.

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      • #4
        The problem with those two schematics is that they don't tie in the reverb channel which has to be specially mixed on the M100. I posted about this yesterday.

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        • #5
          I don't really want the reverb channel included in the direct out. I'd rather just have the main signal and have it be as simple to use as possible.

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          • #6
            If you are planning to use this organ in a live performance environment, I would encourage you to re-think that decision. I find organ-switchable reverb to be *very* useful.

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            • #7
              My organ is only used for recording and I used to just mic it, but I just got a modified Leslie cabinet that takes a speaker level quarter inch input for audio. So I plan on using the Leslie for the main signal, and micing the reverb speaker separately. I really am no good at reading circuit diagrams, so any recommendations of which of the schematics blhristov posted would work best for me?

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              • #8
                If this was my setup, I would figure out how to hook the organ to the Leslie at the factory-designed audio levels!

                Can you document what modifications have been done? It's entirely possible that the quarter-inch input is designed for speaker-level inputs anyhow. That's how I built out a Leslie 25 last year; he plugs the ext speaker jack from a guitar combo amp into the quarter in.

                If the Leslie has not had an extra amplifier grafted into it, chances are about 95% that it was made for speaker-level inputs. I would expect the extra amplifier to be very, very obvious upon inspection.

                Wes

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                • #9
                  Yes the Leslie line in is speaker level.

                  Can anyone dumb down the circuit diagrams blhristov posted above? I'm not going to lie and pretend I understand them.

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